Box Four 8 Speed Shifter Wide 2 Ø handlebars

2 Ø handlebars

The Box One Prime 9 chain is protected by a dual coating process: nickel plating for corrosion resistance

Less rotating weight means faster acceleration

string it all together with a Prime 9 chain but without extravagant coatings

sealed bearings

Box Four 8 Speed Shifter Wide 2 Ø handlebarsThe Box Four shifter's main features aren't strikingly different from Box Three's. The key difference is its 8 speed platform. We've chosen to modernize the 8 speed in much the same way we did the 9 speed for Prime 9. Just like the Prime 9, the Box Four shifters take advantage of the "less is more" theme and exploit durability, simplicity, and reliability. Available as a multi shift (pull several gears at once) or single shift shifter (a sound choice